Class: Hate::Graphics::Camera

Inherits:
Object
  • Object
show all
Defined in:
lib/hate/graphics/camera.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(angle = 45.0, near = 0.1, far = 100.0) ⇒ Camera

Returns a new instance of Camera.



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# File 'lib/hate/graphics/camera.rb', line 9

def initialize(angle=45.0, near=0.1, far=100.0)
  @angle, @near, @far = angle, near, far
  @x, @y, @z    = 0.0, 1.0, 0.0
  @xl, @yl, @zl = 0.0, 1.0, -1.0
  @default = true
end

Instance Attribute Details

#default ⇒ Object

Returns the value of attribute default.



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# File 'lib/hate/graphics/camera.rb', line 7

def default
  @default
end

#x ⇒ Object

Returns the value of attribute x.



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# File 'lib/hate/graphics/camera.rb', line 5

def x
  @x
end

#xl ⇒ Object

Returns the value of attribute xl.



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# File 'lib/hate/graphics/camera.rb', line 6

def xl
  @xl
end

#y ⇒ Object

Returns the value of attribute y.



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# File 'lib/hate/graphics/camera.rb', line 5

def y
  @y
end

#yl ⇒ Object

Returns the value of attribute yl.



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# File 'lib/hate/graphics/camera.rb', line 6

def yl
  @yl
end

#z ⇒ Object

Returns the value of attribute z.



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# File 'lib/hate/graphics/camera.rb', line 5

def z
  @z
end

#zl ⇒ Object

Returns the value of attribute zl.



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# File 'lib/hate/graphics/camera.rb', line 6

def zl
  @zl
end

Instance Method Details

#is_default? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/hate/graphics/camera.rb', line 16

def is_default?
  @default
end

#reshape(x, y) ⇒ Object 



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# File 'lib/hate/graphics/camera.rb', line 20

def reshape(x, y)
  glMatrixMode(GL_PROJECTION)
  glLoadIdentity
  glViewport(0, 0, x, y)
  gluPerspective(@angle, x / y, @near, @far)
  glMatrixMode(GL_MODELVIEW)
end

#run ⇒ Object 



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# File 'lib/hate/graphics/camera.rb', line 28

def run
  glLoadIdentity
  gluLookAt(
    @x, @y, @z,
    @x + @xl, 1.0, @z + @zl,
    0.0, 1.0, 0.0
  )
end